Carving machine of multiple type



Feb. 9, 1932. G. A. PARTEN 1,844,323

GRVING MACHINE OF MULTIPLE TYPE Filed 0ct.'25, 1929 3 Sheets-Sheet 1 www Feb. 9, 1932. G. A. PARTEN 1,844,323

CARVING MACHINE OF MULTIPLE TYPE Filed Oct. 25, 1929 3 Sheets-Sheet 2 Feb. 9, 1932. G. A. PARTEN 1,844,323

GARVING MACHINE OF MULTIPLE TYPE Filed Oct. 25, 1929 5 SheetS-Sheet 3 Egg; 7. F53- 9' It is more specifically an object oi' 'the ncomprises a member 10 shown in the form of 9') Patented Feb. 9, 1932 1,844,323

UNITED STATES l'llNT FFIC GUSTAVE A. PARTEN, 0F MINNEAPOLIS, MINNESOTA.

OARVING MACHINE 0F MULTIPLE TYPE Application led October 25, 1929. Serial No. 402,405.

nis invention relates to a carving machine by said member and swiugable about vertical and particularly to that type oil machine used axes, members pivoted at their central por- Afor carvingjl` wood and similar material in tions to the outer ends of each of said arms whicn a plurality oi' articles are siumltaneinisand extending transversely thereof and havly carved. ln such a machine a plurality of ing tool carrying spindles mounted therein .5o

cutting' tools are used 1which are similarly at each side of said arms, said latter memmoved in unison with and in accordance with a bers being connected by three rigid rods eX- tracer or naister tool which is moved over the ttlClng thorothlough whereby all of said pattern which it desired to reproduce. llll'lS and members move in unison.

Such machines are usually adapted to out TllGSQ Mld Other ObjSCtS and advantages of 60 either substantially flat or round work. Itis thS DVGIltOH VWill be fully set forth inthe desirable in such a machine 'to have the tools 'QOWD' LlGSClPtOD Hulde` ill COIlneCtOll movable with small eliort so that they can 'Wltll the lCi'OmpahyIlg drawings, n which b@ 321511,57 and readily Controlled fl'onl the like l'GIlGIQIlCS ClllLCteI'S IQBI t0 Sllllllll' master tool. ln one type of such a machine Piu-15S throughout the SeVe'al VQWS: and in 65 a member is used extending,r longitudinally Whlh of the machine which member is readily mov- .Fl l t5 i1 plan YGW illustrating a portion able forwardly and rearwardly in a horizon- O ctCLlYlllg Hlflhll; tal plane and which has connected thereto a Flg- 2 1S il "1`tC1SeCt0I1tiLk6D O11 lille 2-2 l1@ plurality of arms mounted 'or lateral swing 0f 19,3 l dS lldCfltGCl by the M'IOWS; 70 ing movement about vertical axes which axes Fg- 3 iS t1 VG'tCill SGCtOIl taken 0D lille are disposed adjacent said member. These 5*3 0f Fg- 1 21S indicated by the MTUWS; arms have in some machines been connected Fig ft iS d View in flOIlt BlQVltOll 0f a p0l`- for simultaneous movement by means comn tQll 0f the CleVC@ Shown in Fig'. l;

i1-' prgng 570k@ @mln-aging the ends 0f Said Fig. 5 is a View in 'front elevation of an 75 arms. other portion of the device shown in Fig. l;

lt is an Object 0f this invgntion t0 provide Fig. 6 is a vertical section `taken through a earring machine having a plurality of arms Some 0f th@ PaltS ShOWIl in Fig. l With Some carried by a member freely movable iorwardportion broken away;

'i ly and rearwardly of the machine and later- Fig. 7 is a vertical section taken on line 7 7 8U ally swingablc about vertical axes, said arms ot Fig. 4 as indicated by the arrows; haring' means pivotcd 'to their iront ends and Fig. 8 is a Vertical section taken on line 8-8 carried thereby in which tool holding spinof F ig. 5 as indicated by the arrows;

.lief-a are mounted. v Fig'. 9 is a view in front elevation of the "5 It is a :further objectof the invention to liv@ Center; i 55: provide a machine such as set i'orth in the Fig. 10 is a vertical section taken on line prt-nreding paragraph in which said arms have 10h-l0 of Fig'. 9 as indicated bythe arrows, members pivotcd at their 'front `ends movable and about vertical anos, said members havinptool Fig. 1l is an endview of a bushing used.

` carrying spindles jourualed therein and be teit'errinir to the drawings, a portion of a 9 int;1 connected by a plurality ot spaced rigid carvin machine of the type shown in appli- 'rods whereby said members and rods form a cants co-pendin l applications S. N. 264,650, beam-l1 ruotare supported at the ends of tiled March 26th,A 1928 and S. N. 298,902, filed said arms. August 11th, 1928 is shown. This machine vention to provide a carving' machine having a pipe or tube which member is mounted for a nieml'ier extending; lengthwise thereof osciloscillating movement about its longitudinal tumble about its longitudinal axis and freeaxis and is mounted on the frame of the n1aly n'iovable forwardly and rearwardly in a chine for movement forwardly and rearhorizontal plane, a plurality of arms carried wardly of the machine or in a direction at right angles to its longitudinal axis and in a horizontal plane. A shaft 10a extends through member 10 and is adapted to carry ball bearings (not shown) on which member 10 oscillates; and in the carving machine illustrated in my said co-pending applications,

such a corresponding shaft is supportedV by Vwheels. whichr travel on tracks running from front to rear of the machine. In other words, the above noted member 10 and shaft 10a form portions ofY carriage whichis -mov-f able backward and forward by the hand of the. operator above the table containing` *the* w material to be carved. The carriage could be of substantially the identical structure as that bolts 12b: Said bracketsll have ball bearing casings iii-.their top ,and= .bottom surfaces receivingv the taperedends of. yscrews 13 which extend through ythe botto-mf and top portions of arms 14, said screWs'being-held in place by jamb nuts? 15. vThecentral` member `11 receives screws 13 extending through the top and/bottom vportions of 1a ltracer armi 16. Arms 14 and 16 have open portions 14aI and 16a resp,ect-ively atwtheir rearY ends through mi' which member'lOipasses andinwhich brackets ll-.aredisposedx Each arm,v 14 has, a iiange.

146 at vits reanend with a vertical flat surface4 thereonlto which is bolted a motor 17. Motor 17 is of thefelectrical type and has `a depending armatureshaft to; which is secured a pul ley 1S.; Armv-14 forward -of the portion 14aV hase portionforming a supportingsurface and guide way forga bracket: l9fand plates 20 i bolted to arm 14 by thebolts 21 overlie the side portions of bracket19i and complete' the guide-way therefor,k Bracket 19= has a-depending hubportion in Whichis secured a shaft 22 onwhich is journaleda flangedpulley- 23, saidpulley- :beingsupported `'on a grease cup 24 formed as a nut andth-readed onto the lower endofshaft-22L Shaft 22 has a nut.125threaded;` onto its,V upper-fend and -a grease cup 26 is screwed onto the top endyof. shaft 22 which will be made hollow. Brack- 'M' -etf19.has a depending lug, V.19a into .which a rodl y27 is threaded, said rod extending. rearwardly' in arnr 14 througlra Vslot 1461. in a small vertical flangetherein and has secured intermediate its ends a flanged collar 28 and toi itsfrearend a ianged collar29. A coiled compression springfBO `surrounds the rear- 1 portion ofi-,rod27 bearing-atits ends respectively-.againstfthe flanges Vof collars=28 and29. Collar 1.28bears` against theryflange 'in which I' slot 14d is formediso that kspring 30. tends to move rod 27 and pulley 23'rearwardly. Arms 14 are provided with bores at their forward v ends counter-bored at each end to receive ball bearing cases V31. The inner members or races of these bearings 31 are engaged by tapered ends of screws 32 and 33 extending through the top and bottom respectively of members 34 at vthe centralportions of the latter as shown in dotted lines in Fig. 4. Arm 16 has a similar bore 16e at its front end also Vcounter-bored to receive-.ball bearing casing 31 the inner recess of which receives the taperedends ofiscrews 32a and 33a`extending ...through the top and bottom portions of the member 36fa`s shown in Figs. 5 and 8. Screws l 32a. and 33a?are provided with jamb nuts 325 and ,-336 respectively'. Screws- 32. and 33 are provided with 4j amb nuts 35 and 35a respectively. The screw 33a in arm 16 is constructed and arranged to carry achuck 37 in which will be gripped a tracer tool 38. Each member 34 has ateach side thereof spaced equal distances from screw A3.2 yvertically extending hubs 34a. These hubs have recesses 345 intermediate their'upper and he lower portions, which yrecesses open rearwardly.` A portion of each hub above recess 3451 is'provided with `a rather large opening or bore 340 receiving a iianged cup-like member 39, in which is disposed a ball'bearing casingpl.. yA conicalcompression spring 41 bears atI its` lower end against lcasing .40 and at its upper end against the top-of a cap mem.h ber.A 42, thelatter `having a recessed lower iangetting: over ange `39 and bolted' thereto by-bolts43. mounted in the top of cap 42 and an oil` cup 45 is mounted in one sidethereof. A spindle 46 is provided, the -top lof which extends through the 4inner race of ball bearing vcasing iff" 40 and is threaded to receivea nut 47 engage ingithetop `of said inner race. Said spindle 46` hasgsecured'thereto a flanged pulley 48 disposedf=in recess 34?),said `spindle havingaa tapeiedportion below pulley 48 which `extends through a vertically adjustable bushing 49 threaded intothe lower portion of hub 34a and held in position by a jamb nut-50. The

lower end of spindle 46 is threaded to receive a ,chuck 51 in which `is-clampedfa ycarving tool i 52.j Pulley 48Y .hasA circumferentially spacednotchesV 48a'in its lower flange, said notches opening downwardly and a pin 53 slidable-in member 34 is adapted to be moved verticallyintosaid notches when it is desired to hold. said pulleystationary.r Pin53 has secured theretoan outwardly extending headed bolt or pin 54 extending through a vertical slot 34d in the lower portion of hub 34a. A Pin 54has a coiled compression spring 55 surrounding the same and bearing atiits outer end against the head of said piny andy at its inner end against a washer 56 engaging the slot of hub 34a. and extendingacross slot 34d.

Spring 5 5 presses vwasher against hub v34a i" A grease cup 44. is'show'n as y machine and suitably driven.

to frietionally engage the same. The low er end of pin 523 rests on nut 50. The inem ber 3d has a split lug 34e at its top central portion and a similar split lug at the front of each hub 34a, as well as a similar lug .34g at the bottom andrear of each hub Silla. Member 36 likewise has a split lug tiene at its top central portion7 a split lug 3G?) at its front central portion and a similar split lug 3Go at its rear lower portion. All of said lugs are adapted to be contracted by screws 57. A tubular rod 58 entends through lugs 341e on members Bei and tl'irough lug 36a on member 36. A similar tubl'llar rod entends through lugs 34; on members 3l and through lug 36?) on member Another tubular rod GO extends through lugs lag on ineinbers 3d and through the lug Stic on member 36. Members ed and 36 are thus rigidly connected by the rods 58, 59 and G0, said rods being clamped in the lugs through which they pass by the screws 57. licite o9 and (it), together with members Ell and thus forni in effect a rigid beam or bar which is pivotally supported by the arms lll and i6. Spindles 46 and the tracer tool 38 are mounted in this bar. The said nie1nbei' Sli may properly be called a spindle-can rier and said member 36 may properly he called a tr cer-carrier. Said member 3ft may carryT one or several spindles.

il belt 6l extends around pulley 23, then fomvardy around pulleys i8 in the hubs 34u and then rearwardly and around pulley 18 on motor li'.

is shown in applicants eo-pending appliization S. ll. 298,902. the work on the carving machine is sometimes held by the centers `when round work is to be made. A novel construction of center for the machine is shown in Figs. 9 to l1. Referring to said f' glues? a` portion of the frame of the machine .shown comprising a beam G5 which is provided with openings 65a in the sides thereof ougli which openings extends a bearing (it. xtying 66 has a flange 66a at its end and il hearing is secured to member by eironiferentially spaced bolts G7 extending therethrough and into .member Flange tfia is shaped as shown in Fig. 9. A sha-ft 68 is journaled in bearii'ig 6G and has secured to its rear end a Worin wheel gear 69 With which meshes a worin gear 70 secured to a shaft 7l which extends longitudinally7 of vthe Shaft 68 is shown as journaled in a ball hearing 72 in the forward partof beariiig Shaft GS has a collar 68a engaging the front of bearing- 72 and iu front of said collar is threaded for a. portion of its length. Said shaft also has a reduced portion 68o in front of said threaded portion. 'lie portion (38h is surrounded by a bushing 73 which bushing is split as shown in lfig. ll and has a groove '7B/,t formed therein opposite its split. A sleeve 7st surrounds bushing 73, said sleeve at its rear end having a flange through which extends a set screw 7 5 engaging bushing 7 3 at its inner end. Another screw 7 G extends through the opposite side of sleeve 7 4; and into bushing 7 8. 70 Sleeve 74 has pins 77 secured therein the centers of which lie on a diameter of sleeve 7 4, said pins having flat chisel like edges at their forward ends. A pin or center 7 8 extends axially through the end of sleeve 7 il, said pin 75 having a tapered and pointed outerend and having a collar 7 Sca at the inner side of the end of sleeve 7 4, said pin also having a short portion projecting inwardly from collar 78a. A conical coiled compression spring 7 9 is dis- 80 posed Within sleeve 74. the outer and smaller end embracing the end of pin 7 8 and bearing against collar 78a and the inner and larger end of said spring bearing against the end of bushing 73. An adjusting and clamping collar 80 is threaded on the threaded portion of shaft 68 in the rear of sleeve 74, said collar having a handle lug 80a at one side and a split lug 80?) at the opposite side, said split lug having a bolt 8l extending therethrough 90 adapted to bring the portions of 806 together and clamp said collar on shaft 68.

In operation of the structure shown in Figs. 9 and l0, the collar 80 will be turned on shaft 68 to bring sleeve 7d into proper 95 relation to the work. The sleeve 74: will be brought to approximate position by adjust ing one of the members carrying the centers. When collar 8O is adjusted the same Will be clamped in position by bolt 81. The Worlr will be pressed against pins 77 and 78, pin 78 entering the work approximately at its longitudinal axis. The Work will be driven against pins 77 and 78 and if resistance to: Y pin 78 is sufficiently great, the spring 79 105 will be coinpressed allowing the Work to be driven against and engaged by pins 77 Without splitting the work. Pin 78 often projects forwardly sufficiently so that if no yielding is provided for, the work will be split by being driven over pin 78 before it is effectively engaged by pins 77. Vhen the sleeve 7d is in the desired position said screw 75 is tightened pressing bushing 73 tightly against shaft portion 68?) and connecting 115 sleeve 74 to said shaft so that it will be driven with said shaft. Screw 76 is provided so that bushing 73 will nieve with sleeve 74. It will thus be seen that by the arrangement of the center structure the Werl; can be driven against the live or driving centerwith no danger of the work being split. The structure aoconnnodates the necessary adg justinent of the parts.

ln operation the 'work is clamped on a 125 work table if it is flat work or is clamped be tween centers if it is round work; the Work heilig in a position to be acted upon by the tools 52. The pattern which is to be copied is placed under the tracer tool 38, the motor ings 49.- Thelatter bushing can be adjusted 17 bei-ng driven,and the spindles46 and .tools driven .through the-belt `61.- Itjwill be-noted Vthat :this beit will-be. keptunder proper-tensionbyv pulley 23 Which-fis con.- stantflyllrged rearwardlyby ,spring 30. As the tracerl tool- 38 is moved over the pattern the tools 52 move through the' lsame path,

other and :to the rods 58, 51.9 and G0 by which they are rigidly connected, lt will ofcourse be understood that members 34 and 36 move inthe bearings-Sllwhen arms 14 and 16 are swung laterally. The-motors 17 Y act as'xcounterrweights for thearms 14 and 16 and parts carried thereby. The spindles 46 rotate freely in the ball hearings 4() andin'the bush.-

vertically to tale-y up ,anyfpllay `in the spindles. Thespindlesmay rise .slightly if necessary against thetension jof Yspringjil. When one of the tools y52is to be removed or replaced it is necessary to hold the pulley 48 stationary. AThis is done by sliding pin 53 upwardly, by takinga hold of the head of pin 54, pin 53 moving into one of the notches 48m-of pulley 48. Pin .53 will remain in the position to which it is moved owingy to the friction of washer 5,6 `against the front of hub 34a.

From the abovedescription it is seen that applicant. hasv provided a simple and efficient structureof carving'machine and one in which the spindles are effectively carried in the swinging arms and are connected so as .to swing in unison. yAn improved and effective structure of-ivork holding and driving .cen-

ter is also provided. The-structure is simple and lcompact,ftliesaine has been amply demonstrated'in. actual practice and is beingcom.. mercially made.v

It will, of course, be :understood that; various changes maybe made in the form, details, proportions and arrangement 4of the parts, without departing from the scope ofk applicants Y invention, which, generally stated, consists in a deviceV capableof carry-,

` ing out the yobjects above set forth in' the novel parts and combinationsof `parts disclosed and defined vin the appended claims. WVhat is claimed is l .p 1; A carving machine having in combination, a .member extending .transversely of said machine, a plurality. of arms carried v.by =said member to swing about vertical axes,

a member connected to the forward endof each larm by a pivot having a vertical axis, said member extendingtransversely of said arms, a tool-carrying .spindle mounted inv said member'ateach .sidezof said arm and a plurality of horizontal rigid rods extending ,through said members and holding all of said members in the same .positionrelative to said ro s.

2, A carving machine having -incombination, a plurality of; arms lmounted for 4horizontal swinging movement, a member at'the front of reach arm Vconnected at the center'to said arms for horizontal' swinging movement relative thereto, a tool-carrying spindle mounted in said ,member at each side of said arm and rods .connected to -all of said members at the front and rear4 side of the connection of each of said :members to said arms holding said members inhxed relation to said rods andV in a line extending transversely of 4said machine.. v

.3. A carving machinehaving in combination,` a member extending; transversely of said machine oscillatable about its longitudinal axis, an arm carried by said member and horizontally swingable relatively thereto about a vertical axis, a member pivoted at its central portion and about a vertical axis to the forward end ofy said-arm, toolcarrying spindles mounted in said last mentioned member at .eitherV side of said arm, a pulley secured to each spindle, a motor on the rear of saidarm :having a pulley secured thereto, ay pulleyslidably v`mounted in said arm in front of ysaid Afirst-mentioned member, resilient means urging said last mentioned pulley rearwardly and a be'lt extending around said pulley onsaid motor andforwardly around the pulleys on said spindles and then :rearwardly -aroundsaid slidable i rulleyl 4. -A carving machine having in; combination, a plurality of laterally swingable arms, said arms:beingoscillatable about a horizontal axis, a member pivotedto the forward end of .each of said arms about advertical axis, said members having hubs at each side of said axis, tool-carrying spindles mounted in said hubs, said members having spilt lugs at thefforward and rear sides of said hubs, and al split lug at theIv rear side of said-member centrally thereof and above said'lugs' and rigid rods Vextending `respectively through corresponding lugs. onsaid gmembers, and means for clamping said rods in said lugs.

5.- The-structure setl lforth in claim 4 .and a tracer arm mounted Afor lateral swinging, and vertical' oscillating movement, a split lug at the front of-said tracer arm aligned 6. Ina :carving machine the combination i with an arm supportingv extending transversely of the'machine and oscillatable in the vertical plane of a plurality vof arms mounteci on said supporter with freedom for lateral swinging motion and a plurality of spind1ecarriers pivotally connected to the forward ends of said arms for lateral swinging moon in relation to said arms, e tracer arm jpi'voted to said supporter for lateral swingn ing motion, u. tracer-carrier pivoted to said t "meer erm for lateral swinging motion in relation thereto and rigid connections between all of said spindle-carriers and said traceroarrer, Substantially as described.

In testimony whereof I aix my signature.

GUSTAVE A. PARTEN. 

